initial commit for converting to capistrano 3
add capistrano-canvas to the sfu gemfile
add capistrano/canvas to Capfile
add sfu-specific tasks back to canvas.rake
add capistrano binstubs
set variables properly in graphite task
set path for canvas-edge
fix bundle settings
formatting cleanup
require a pty for sudo tasks
add paths to testing, staging, production
meh
use hatzic instead of welcome for gateway
default log to info, override with log_level env variable
Merge branch 'cap3' into sfu-develop